Method for application of liquid treatment to cord or the like during twisting



R. L. LANG 2,940,248 METHOD FOR APPLICATION OF uqum TREATMENT 'ro CORD OR THE LIKE DURING 'rwrs'rmc Filed April 7, 195a June 14, 1960 ATTORNEYS United States Patent METHOD FOR APPLICATION OF LIQUID TREAT- MlNT TO CORD OR THE LIKE DURING TWIST- 1N Roy L. Lang, La Grange, 6a., assignor to 'Callaway Mills Company, La Grange, Ga., a corporation of Georgia Filed Apr. 7, 1958, Ser. No. 726,830

2 Claims- (Cl. 57-162) The present invention relates to a method and apparatus for application of liquid treatment to cord or the like during twisting. The liquid applied to the cord may be for the purpose of making the product mildew-resistant, water-repellant, flameproof, or for other purposes. The invention is particularly applicable to the production of relatively heavy cord such as hose cord, but is not thus limited.

It has heretofore been known to wet some or all of a plurality of yarn ends prior to twisting those ends. An illustration of the wetting of all yarn ends to be twisted will be found in United States Patent No. 373,385, issued November 15, 1887, to George L. Brownell. United States Patent 1,050,786, issued January 21, 1913, to Samuel Y. Austin and Roy Dallis illustrates a procedure for wetting less than all the yarn ends to be twisted. The present invention may be regarded as an improvement over the disclosures of the foregoing patents.

When all the yarn ends are wetted as disclosed in the above mentioned Brownell patent, an excessive amount of the treating liquid is applied. The application of an excessive amount of liquid is wasteful of the liquid which is often expensive, and also has a deleterious effect on the product. The procedure disclosed in the above mentioned Austin and Dallis patent does not provide uniformity of wetting of the yarn ends in the cord. The dry ends of the cord tend to collect together and to receive or accept an insufiicient amount of the liquid treatment to accomplish the desired objective.

The foregoing difiiculties are overcome in the practice of the present invention. According to the present invention, a ring is immersed in a treating liquid. Vertically spaced above this ring isla first compressor which is positioned above the level of the treating liquid. A second compressor is vertically spaced above the first compressor. A first portion of the yarn ends are passed directly from the source of supply through the first compressor and then upwardly through the second compressor. These first yarn ends do not pass through the liquid. The remainder of the yarn ends pass from the source of supply through the ring immersed in the liquid and then pass through the second or upper compressor only. As these wet yarn ends reach the second compressor the excess treating liquid is stripped therefrom and flows downwardly onto the dry yarns approaching the second compressor. The combined yarns are twisted after passing through the second compressor. This procedure has been found to give substantially uniform application of treating liquid to all the yarn ends forming the cord or other product. The amount of liquid treatment applied to the cord can be regulated by controlling the number of yarn ends which pass through the ring immersed in the liquid.

The primary object of this invention is to obtain substantially uniform impregnation with a treating liquid of all yarn ends which are combined to form a cord or other product.

Other objects and advantages of the invention will be 2,940,248 Patented June 14, 1960 understood by reference to the following specification which refers to the accompanying drawing wherein the single figure is a view partly in side elevation and partly in vertical section of those portions of a twister frame which are involved in the present invention.

The invention will be described in connection with its use on a Brownell twister, one type of which is disclosed in the above mentioned Brownell Patent No. 373,385. Reference may be made to that patent for a disclosure of a complete twister.

Creels 1 and 2 support a plurality of spools 3 and 4, respectively, to provide the supply of yarn ends. While the drawing illustrates only two yarn spools on each creel, it will be understood that in actual practice a much larger number of spools will be used. As many as sixtysix or more yarn ends may be utilized. Yarn ends 5 from the spools 3 pass from those spools through a collecting ring 6 and over the peripheral lip 11 of a vessel 12 to a first or lower compressor 7. The lower compressor 7 is rigidly supported above the'level of the liquid in the vessel 12 by a standard 8 secured to any suitable portion of the twister. The yarn ends 5 then pass upwardly through a second or upper compressor 9, which is also supported by the standard 8.

Yarn ends 10 are drawn from the spools 4 and pass over the upper peripheral lip 11 of the vessel 12. The vessel 12 contains the treating liquid 13 and is supported on a post 14. A ring 15 of porcelain or other suitable material is positioned within the vessel 12 and supported therein below the level of the liquid 13 by fingers 16 which engage a groove 17 in the outer surface of the ring. The yarn ends 10 pass downwardly through the liquid from the lip 11 of the vessel 12 and pass through the ring 15. The yarn ends 10 are thus thoroughly 'wetted by the liquid 13. The yarn ends 19 bypass the first or lower compressor 7 and enter the upper compressor 9 in generally surrounding relationship to the yarn ends 5. As the yarn ends 10 enter the upper compressor 9 the excess liquid is stripped therefrom and flows downwardly onto the yarn ends 5 approaching the compressor 9. This action serves to wet the yarn ends 5 prior to and at the time of their entry into the compressor 9. The combined ends 5 and 10 are twisted above the compressor 9, as indicated at 18, by a conventional twisting apparatus not illustrated in the drawing.

The invention has been found to be particularly advantageous in the production of heavy cords such as hose cords. Such cords should be treated with a mildewproofing agent and all components of the cord should receive approximately the same amount or concentration of the treating agent. The procedure outlined above will be found very effective in such treatment as well as for application of treating agents for other purposes. The extent or concentration of the liquid treating agent in the finished product can be regulated by controlling the ratio of the number of yarn ends 5 to the number of yarn ends 10. In other words, the greater the number of yarn ends 10 which are immersed in the liquid 13, the greater will be the concentration of the treating agent in the finished product.

I have illustrated and described what I now consider to be the preferred embodiment of the invention. Various modifications may be resorted to without departing from the broader scope of the invention.

'Having thus described my invention, '1 claim:

1. A method of twisting yarn ends which comprises combining a portion only of said yarn ends in a dry state in a first zone, longitudinally advancing the thus combined dry yarn ends together from said first zone to a second zone spaced from said first zone, wetting the remainder of said yarn ends by immersing the same in a liquid, advancing said wet yarn ends in individually spaced relationship and excess liquid adhering there- V todirectly irom'the surface of saidliquid to said second" zone, combining said Wet 'yarn ends in generally surrounding relationship to said dry yarn ends insaid second zone, compressing the wet yarn ends with themselves and with' said surrounded dry yarn ends insaid second zone to'strip excess liquid from said 'Wet yarn'e'ndsfland depositsuch excess liquid on said dry 'yarn ends as the dry yarn endsenter said second zone, and imparting twist to said yarn ends.

2; A methodof twisting a plurality of yarn ends which -con1pri'ses combining a portion only of said yarn ends in a "dry State in a first zone, longitudinally advancing the thus combined dry yarn ends to a second 'z one spaced yvertically upwardly from saidfirst zone, wetting the rejr'nainder of said yarn ends by immersing the 'sa 'ai liquid, advancing said wet yarn ends in individually "spaced relationship and with excess liquid adhering there- "to directly from the surface of said liquid to said second -2,940,24s V 7 p n zone, combining said wet yarn ends in generally surrounding relationship to said dry yarn ends-insa'id second zone, compressing said wet yarn ends with themselves and with said surrounded dry yarn ends in said second zone to strip excess liquid from said wet yarn ends and flow such excess liquid onto said dry yarn ends as the dry yarn ends move vertically-upwardly into said second rezone, and-imparting twist to said yarn ends,

References Cited in the idle of this patent "1 

